<html>
<head>
<style>
div {
    height: 20px;
}
</style>
</head>
<body>
  <div style="background-color: green"></div>
  <div style="background-color: blue"></div>
  <div style="background-color: yellow;"></div>
  <div style="background-color: green;"></div>
  <div style="background-color: cyan;"></div>
  <div style="background-color: grey"></div>
</body>
</html>

